Rail transit refers to a type of transportation vehicle or system that requires operating vehicles to travel on a specific track.

With the growth of electricity demand, people have begun to propose the idea of establishing an electricity production center.

The comprehensive pipe gallery is a structure and its ancillary facilities set up below the ground to accommodate two or more types of municipal pipelines, equipped with specialized maintenance ports, lifting ports, and monitoring systems. It implements unified planning, design, construction, and management, and is currently one of the important forms of urban underground space development.

Ports are important transportation infrastructure and a window for achieving an export-oriented economy, providing fundamental support for national economic construction and the development of foreign trade.

With the sustained and rapid growth of China's economy, the growth rate of fixed assets investment in the whole society has exceeded 20% on average.